Abrasion resistant coating composition for glass curable by radiation and a process for preparing this composition.

摘要

The composition comprises a cocondensate of vinyltrimethoxysilane or vinyltriethoxysilane and tetramethoxysilane or tetraethoxysilane, a reactive thinner which contains at least 2 vinyl, acrylic or methacrylic groups per molecule, and optionally a photoinitiator known per se. The composition can be prepared by forming the cocondensate in the presence of an at least equivalent amount of water or in the presence of a small amount of a carboxylic acid, removing all the volatile components of the reaction mixture, and mixing the oily siloxane which remains as the residue with the other components.